Abstract: A method for point cloud coding (200 or 300) or decoding (400 or 500) includes identifying (201) a plurality of quantized points in 3D space, defining (202), a sequence order of the quantized points in 3D space, and identifying (203) differential vector patterns in the sequence order of quantized points in 3D space. The method further includes identifying (204) Morton Index Differences in the sequence order of quantized points in 3d space, coding (205) the one or more quantized points in 3D space using differential vector patterns in a first plurality of codewords, coding (206) the one or more quantized points in 3D space using the Morton index differences in a second plurality of codewords, combining (207) the first and second plurality of codewords into a third plurality of codewords, and coding (208) the third plurality of codewords using an entropy coding scheme into a bitstream.

Abstract: A method or system (100, 200, or 300) for receiving volumetric video (102) includes receiving (201) a first video track carrying geometry information, receiving (202) a second video track carrying occupancy information, receiving (203) an auxiliary metadata description, and receiving (204) a third track carrying texture information where the first and second video track are combined with the auxiliary metadata description to perform 3D geometry reconstruction to produce one or more geometry position (205). A fourth track is used to reconstruct (206) one or more color attributes corresponding to the one or more geometry positions. The one or more geometry positions and the one or more color attributes are combined to form (207) 3D colored points and rendered (208) as a volumetric video.

Abstract: A method for point cloud coding (200 or 300) or decoding (400 or 500) includes identifying (201) a plurality of quantized points in 3D space, defining (202), a sequence order of the quantized points in 3D space, and identifying (203) differential vector patterns in the sequence order of quantized points in 3D space. The method further includes identifying (204) Morton Index Differences in the sequence order of quantized points in 3d space, coding (205) the one or more quantized points in 3D space using differential vector patterns in a first plurality of codewords, coding (206) the one or more quantized points in 3D space using the Morton index differences in a second plurality of codewords, combining (207) the first and second plurality of codewords into a third plurality of codewords, and coding (208) the third plurality of codewords using an entropy coding scheme into a bitstream.